Trolley base



Feb. 13, 1923. 1,444,933. w. SCHAAKE. TROLLEY BASE.

FILED OCT. 9,1920.

Patented Feld i3, i923.

musei WILLIAM sona/inn, or Armfrsrrn ELECTRIC e MANUFACTUMNG GH,PENNsYLv/ANIA, are wssiirlveiousr convenir, a estresantes-sslmsvtvamaTnoiiniiv BASE.

Application 'led October 9, v1,320# erel'Ne- '4515573.9,

To all whom it may concern:

Be it known that I, WILLIAM SGHAVAKE, a citizen of the United States,and a resi? dent of Pittsburgh, in the county oi' 'Allevented a new anduseful lImprovement"in Trolley Bases, of which the following yis a.

specification.

My invention relates to trolley bases-and more particularly to 'meansvfor holding a trolley pole in yielding engagementwith, a trolleywireand for allowing theLnecessary rotative movement of the trolley pole`about its base.V p

rIhev object of the invention is to provide a simple and compact basewhich may lbe very easily assembled and may be readily taken apart forreplacement or repairs.

This invention is an improvementyover the device or' myPatent No.1,175,305, issued March 14E, 1916, and differs therefrom principally bythe provision oit a casing within which the bearing sleeve is rotatablysulpported on a rictionless bearing; which casing has a base portionadaptedto be secured y to thetop of a car.

. trolley car My invention is illustrated, in 4preti-irreal form, in theaccompanying drawing, where- 1n:- L y Y Figure l is a side elevationalview oi a having my device 'applied thereto; y

Eig. 2 is a partially sectional view, inside elevation, oa trolleybaseembodying my invention.

Fig.A 3 is a view,.sin1ilar to that of Fig. 2;,r on an enlarged scale. pi A .Fig is a plan view'of the device,vand

Fig. 5 is an enlarged detail lview Aoit the spring-stop member.

'My invention is shown as designed for use with a trolley car 6 of thesafety type which has a low roof and, consequently," a

considerable arnount of 'space between*the` roof of the car and atrolley wire T.

The device consists oi?` a casing member S flared at its lower end andprovided with a series of bolt holes 9 by which it is ifa-,stened to theroof of the car.

. The casing member, S hasa channel lO in its upper end for thereception of a ball race .ll containing a series of balls l2. A bear ingringfmember 13 coacts with the balls 12 and the ball race 11 to forni anantifriction bearing, and a cover or shield 14 is pro- 'proj eotin '530on the cylinder,

t0 prevent'access oil "dirt Yor moisture tothe balli-bearing- Acylindrical Finember i125 4'is rotatably v mounted 'wifthin'the casing 8has a snug gheny and State of Pennsylvania, have 1nl fitwithfthe'be'aringringl so that itrotates therewith.y lAt :itsupper'end', the cylinder 8 Iis` rovided with'a'lange 1,6 which, "inaddition VVto 'positioning the cylinder with re,.-v spect to thecasing'falso carries pivotaly supportsy vfor the trolley-pole socket I7 andabovejreferredto, ,the cylinder and casing arenrotative 'with'f'respectto one another, and, by reason otthenlengthof the Aoy'llinder 15, thereIisf'no-:tendencyy `-ifo'rit to fbinjdV4 at its lower end,underlateralstrains. 'The cylinder l5 is slightly reduced in sizebetween the ends, as indicated at 19,? te leave Ia space between J'itland the: casing 8I `'for the insertion oflu'bricant. y f

At its upper end, the cylinder is'provided with fouriiiturned 'lllgorportiensfQO (Fig, 4t) L These lugs" are so arranged Aafs-tto `permit theinsertion*and retention 'thereon yo'the spring-stopfmember*2L "Theistopmember 2l V-is provided with "lugsA 22 'and shoulder portions 23.To'fin'sert the stop member, it

is turnedsf that the flugs -arealined -longii tudnallyeof thetrelleypole and it is then ypressed downwardly against-the spring in 'thecylinder vand glivefa quarter turn, se that -it `is lor'oujgl'it into-thefposition shown more clear-ly in Fi'g. ill, land fthe flugs v2Qoccupy the. Spaces between adjacent pairs-ot projections-20,andjthefshoullers 2?;,by reyasonof the'sf'pring:pressurefenthelundersideof the stop 1ineniblerg abut. against the 'under' side ofprojections'QO.' llhe 7 spring estepa `Q1 f-serves to `retain a'springwithin "theeylinder 115'.' .At its lowerendthe spring-is'supportedby a' seat 25, 'which A'has a lug 26 :extending ytinto" vvaks'l'ot 2' inithe vwelll of the cylinder. '15,"so that .it

jlwlill be Anonretentir",le with respect -vtothe cylinde/r.,4 U5The`cylinder` has Holes 28 in the 'bottoni thereofthrough whichinoisturethat "finds itsfway -intoftheup-perjend of the cylinder `may ew away.

The pole 'socket l is Vpiwjted at 29 to a member 18 is-fpivoted to `alpro-jeetion 31 andthe latch i pole socket 17 rests upon the upper endof the cylinder 15 and thereby retains it in place when the spring seat25 is drawn upwardly 'to compress the spring, and that the spring isplaced under compression by pulling the trolley pole in a directionfroml the vertical to the horizontal. vWhen the trolley pole is drawnbelow its horizontal position, the latch member 18 will fall .into

1 engagement with the end of the arm 32, 'as

indicated by the dotted lines in Fig. 3, and, therefore, will lock thetrolley pole .in its retracted position. This locking engagement servesto securely hold all of its parts in position, when the base isl beingplaced upon the lcar or vis being removed therefrom. v

The car roof carriesa pair oi hook members 40 which are utilized, in theusual manner, to maintain the trolley poles in inoperative position.

lt will be seen also that the trolley pole, by reason of the rotativemounting of the cylinder-15 within the casing 8, is free to move easilyvina horizontal plane and that the spring 24 acts to normally eXerttensionvthereon ina vertical plane and to normally maintain constantengagement of the trolley wheel with thetrolley wire.

The arrangement of parts is such that the base may be readily assembledand disassembled for renewals or repairs, and it may be fully assembledbefore it is placed on the car. f

Various changes might be made in the device'without' avoidingtheinvention as defined in the accompanying claims.

l claim as my invention l Y 1. A trolley base comprising an uprightcas-ing having` an upwardly disposed annular recess adjacent its upperedge, anti-friction bearings in said recess, a cylindrical .member lyingin the casingand provided with an outwardly 'extending flange disposedabout its upper end in position to rest upon the antifriction bearingsand with inwardly extending lugs, a spring seat slidably supportedwithin thecylindrical member, a springfstop member placed beneath thelugs., a spring interposed rbetween the saidl seat and stop member, atrolley pole pivotally mounted upon the upper end of the cylindricalmember and having an arm lying across the end oi said member, and

a bolt connecting the said arm to the spring seat, whereby tensionexerted by the spring on itsseat is transmitted to the trolley pole.

2. A trolley base. comprising a casing member, a cylindrical member.rotatably mounted therein and having inwardly projecting lugs adjacentits upper end, a spring seat slidably supported within the cylindricalmember, springstop member adapted to engage with the under side oi saidlugs, a spring interposed between the said seat and the stop member7 atrolley pole, a trolleypole Socket pivotally supported on the upper endof the cylindrical member and having an arm extending partially acrossthe upper end of the cylindrical member, and a boltI having one of itsends secured to the spring seat and its other end engaged by the saidarm, whereby compression of the spring between the spring-stop memberand the springr seat yplaces the trolley pole under tension, the saidlugs being diametrically spaced a distance greater than the outsidediameter oi' the spring, sothat the spring may be removed therebetweenwhen the said stop .member `has been removed.

3. Altrolley base comprising an upright casing, provided with a bearingsurface ad-r jacent to its upper edge7 a cylindrical mem,- ber lying inthe casing and provided with an 'y outwardly extending' flange disposedabout its upper end in position to serve as a bearing member forco-operating with the bearing surface on the casing and also providedwith inwardly eXtending lugs adjacent to its upper end, a spring seatslidably supported ,withinv the cylindrical member, a spring interposedbetween the seat and the lugs, a trolley pole pivotally mounted upon theupper end oic thecylindrical member and having an arm lying across the'end of said member, a bolt connecting the said arm to the spring seat,whereby tension exerted by the spring on its seat is transmitted lto thetrolley pole, and a latch carried by the cylindrical member for lockingthe `pole down against the compression of the spring.v

4. A trolley base comprising an upright substantially tubular casing,provided with a bearing surface adjacent to its upper edge, acylindrical member lying in the casing and provided with an outwardlyextendingtlange disposed about its upper end inl position to serve abearingmemberv 'tor co-A operating with the bearing surface on thecasing and also provided with inwardly eX- `tending' lugs adjacent toits upper end, a

springseat slidably supported within the cylindrical member, a springinterposed between the seat and the lugs., a trolley pole pivotallymounted upon the upper end of theicylindrical member and having an armlying across the end oli said member, a bolt connecting the said arm tothe spring seat. whereby tension exerted by the spring on ioo its seatis transmitted to the trolley pole, and a latch carried by thecylindrical member for locking the pole down against the compression ofthe spring.

=, spring seat slidably supported within the cylindrical member, aspring interposed between the seat and the lugs, a trolley polepivotally mounted upon the upper end of the cylindrical member andhaving `an arm lying across the end of said member, a bolt connectingthe said arm to the spring seat7 whereby tension exerted by the springon its seat is transmitted to the trolley pole,

and a latch carried by the cylindrical mem-i ber for locking the poledown against the compression of the spring, the cylindrical member beingof such diameter at its lower yend and of such length that its lower endco-operates with the inner wall of the tubular member' to form a bearingtherebetween.

6. A, trolley base comprising an upright casing provided with a bearingsurface adjacent to its upper edge, a cylindrical member lying in thecasing and provided with an outwardly extending flange disposed aboutits upper end in position to serve as a bearing member for co-operatingwith the bearing surface on the casing and alsoprovidedr with inwardlyextending lugs adjacent to its upper end, a spring seat slidably butnonrotatably` supported within the cylindrical member, a springinterposed between the seat and the lugs, a `trolley pole pivotallymounted withinthe upper end of j the cylindrical member and having anarm lying across the end of said member, a bolt connecting the said armto the spring sea-tj'` whereby tension exerted by the spring on i itsseat is transmitted to the trolley pole, and a latch carriedby thecylindrical inember for locking thepole down againstthe compression ofthe spring.

ln testimony'fwhereof7 I have hereunto subscribed my name this lirst dayof October, 1920.

WILLIAM SCHAAKE.

